The **47LM-150R-R** is a specific part number typically associated with **SMD (Surface Mount Device) Power Inductors**, specifically within the 47LM series. These components are designed for power management circuits where high current and low DC resistance are required. --- ### 1. Technical Specifications The part number follows a standard industry naming convention which identifies its primary electrical characteristics: | Property | Value | Description | | :--- | :--- | :--- | | **Inductance** | 15.0 µH | The "150" indicates 15 x 10^0 microhenries. | | **Tolerance** | ±20% | Indicated by the "M" in the part code. | | **Inductor Type** | Power Inductor | Designed for high current handling. | | **Mounting Type** | SMD/SMT | Designed for automated PCB pick-and-place. | | **Core Material** | Ferrite | High-frequency efficiency with low core loss. | --- ### 2. Key Features * **Shielded Construction:** Most inductors in this series are magnetically shielded to prevent Electromagnetic Interference (EMI) with neighboring components. * **Low DCR:** Low Direct Current Resistance ensures minimal energy loss as heat, increasing the efficiency of the power supply. * **High Saturation Current:** Designed to maintain inductance levels even when high current spikes occur. * **Compact Footprint:** Optimized for space-constrained electronics like laptops and mobile devices. --- ### 3. Common Applications These inductors are primarily used in **DC-DC conversion** circuits. Common use cases include: 1. **Buck/Boost Converters:** Stepping voltage up or down in battery-powered devices. 2. **LED Drivers:** Providing stable current to high-brightness LEDs. 3. **Power Supplies:** Filtering noise and smoothing output voltage in switching power supplies (SMPS). 4. **Consumer Electronics:** Found in motherboards, graphics cards, and telecommunication equipment. --- ### 4. Part Number Breakdown * **47LM**: Series identifier (usually relates to the physical dimensions, e.g., 4.0mm x 4.0mm or similar). * **150**: The value code. `15` + `0` (zero) additional zeros = 15.0 µH. * **M**: Tolerance code (M = ±20%). * **R-R**: Packaging/RoHS designation (usually indicating Tape and Reel packaging and Lead-Free compliance).